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Fatty acids are theprimary source of energy for the heart and for skeletal muscle during rest or moderate physical activity. Triglycerides are our body鈥檚 major energy reservoir. Following ingestion, triglycerides are broken down in the gastrointestinal tract into free fatty acids, the form in which they are absorbed.

People also ask


  • How do cells use fats to make energy?

  • How Cells Use Fats to Make Energy (ATP) What Is Fatty Acid Oxidation? Fatty acids are an important fuel for the generation of cell energy in the form of adenosine triphosphate (ATP). Fatty acid oxidation, also known as beta-oxidation, is the metabolic pathway of fatty acid breakdown for energy production.

  • What are fatty acids and what do they do?

  • Fatty acids are actually the primary source of energy for some tissues, most notably the heart (i.e., the cardiac muscle) and skeletal muscle during rest or moderate physical activity.

  • Why do fatty acids have more energy than glucose molecules?

  • This is largely because a fatty acid is more reduced than a glucose molecule. That is, it can be oxidized more, having its electrons stripped and therefore yielding more energy.

  • How does the body use sugar and fatty acids?

  • Cells can happily utilise sugar or fatty acid throughout the day depending on the timing of meals and the amount of sugar in the bloodstream. When protein is eaten, the body breaks it down into individual amino acids before it can be used by the cells.

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